Weldac: Tube welders

Weldac is our family of proven high-output solid-state welders for welding low-carbon steel, stainless steel, high-strength steel and aluminium.

Induction heating explained

ENRX Weldac induction tube welding line installed in an industrial production facility

Introduction

Weldac is our family of proven high-output solid-state welders for welding low-carbon steel, stainless steel, high-strength steel and aluminium. The Weldac family covers a wide range of power sizes from 50 kW up to 2,200 kW and a frequency range of 90-500 kHz with either Silicon Carbide or Insulated Gate Bipolar Transistor.

Small footprint and very fast installation
Continuous electronic load matching
System efficiency of 85 % to 92%

Complete Weldac induction welding system range from ENRX, showing models Weldac 03, 04, 06, 08, 11, and 22 in different cabinet configurations.

Modular design

Modular design saves valuable floor space and simplifies in-line integration and retrofitting. ENRX has always been at the forefront of developing equipment with the best power-to-volume ratio. We offer up to 1,100 kW in a one-cabinet solution.

Five-year warranty

Reliability is critical in high-output welding applications. That’s why Weldac solid-state welders are backed by an unmatched five-year warranty on inverter modules and driver cards.

Designed and built for demanding industrial environments, Weldac systems combine robust engineering with long-term security — giving you confidence in performance, uptime, and total cost of ownership over the full lifecycle of your equipment.

Weldac I High-output solid-state welders

Weldac is a complete offering with a diode rectifier, inverter modules, output section, busbar and operator control system. You can also access a full range of consumables including coils, ferrite, impeders and tube scarfing equipment. We also supply seam normalising solutions.

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Learn about how and where the Weldac family can be used

related applications

Welding

Normalising

related industries

Tube and pipe

Solutions explained

Weldac high-performance tube welding

Powered by advanced induction technology, ENRX Weldac delivers efficient, high-output tube welding from 350 kW to 2.2 MW. For a wide range of materials, with maximum uptime and performance.
The new Weldac 03 | Make space for more

Upgrade your tube mill with the most compact HFI welder on the market. Featuring 99.4% efficiency and a 40% smaller footprint than Weldac 04.

Image gallery

Compact Weldac - a small revolution: 1300 mm (h) x 1500 mm (l) x 500 mm (w).
Automatic frequency adjusting to each tube dimension. Coil changes take only seconds.
Easy-to-use control panel with intuitive guiding for operators.
Double cabinet welder.
Automated induction longitudinal welding is a reliable, high-throughput process.
Weldac can be fittet with various induction coil or quick-lifting contact heads.
Weldac’s automatic load matching ensures full output power across a wide range of tube sizes. There are no “unsafe” operating areas. When a different-sized coil is fitted, Weldac automatically matches to the best setting.
The low power consumption and high efficiency of ENRX welding systems reduces costs.
Ferrite for high-frequency tube welding.
ENRX offer a full range of consumables, including coils, ferrite, impeders, and tube scarfing equipment.
The high-speed troughput and reliability of induction welding makes it perfect for the tube and pipe industry
Weldac's efficiency from input at the rectifier to output at the coil is 85-95%.